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/Problem10_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:02:40,430 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:02:40,432 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:02:40,446 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:02:40,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:02:40,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:02:40,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:02:40,454 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:02:40,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:02:40,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:02:40,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:02:40,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:02:40,470 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:02:40,473 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:02:40,474 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:02:40,475 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:02:40,476 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:02:40,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:02:40,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:02:40,481 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:02:40,482 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:02:40,483 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:02:40,486 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:02:40,492 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:02:40,493 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:02:40,494 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:02:40,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:02:40,495 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:02:40,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:02:40,511 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:02:40,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:02:40,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:02:40,513 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:02:40,513 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:02:40,513 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:02:40,514 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:02:40,514 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:02:40,514 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:02:40,514 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:02:40,514 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:02:40,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:02:40,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:02:40,516 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:02:40,516 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:02:40,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:02:40,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:02:40,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:02:40,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:02:40,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:02:40,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:02:40,517 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:02:40,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:02:40,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:02:40,519 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:02:40,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:02:40,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:02:40,520 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:02:40,520 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:02:40,520 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:02:40,521 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:02:40,521 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:02:40,521 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:02:40,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:02:40,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:02:40,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:02:40,616 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:02:40,617 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:02:40,618 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-23 22:02:40,689 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea7f6cdd6/368d753dda8c4a2eac72ee59a4881810/FLAGb01435bbe [2018-10-23 22:02:41,323 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:02:41,324 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-10-23 22:02:41,345 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea7f6cdd6/368d753dda8c4a2eac72ee59a4881810/FLAGb01435bbe [2018-10-23 22:02:41,364 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea7f6cdd6/368d753dda8c4a2eac72ee59a4881810 [2018-10-23 22:02:41,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:02:41,380 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:02:41,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:02:41,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:02:41,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:02:41,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:02:41" (1/1) ... [2018-10-23 22:02:41,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b49186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:41, skipping insertion in model container [2018-10-23 22:02:41,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:02:41" (1/1) ... [2018-10-23 22:02:41,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:02:41,475 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:02:41,956 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:02:41,964 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:02:42,142 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:02:42,168 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:02:42,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42 WrapperNode [2018-10-23 22:02:42,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:02:42,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:02:42,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:02:42,171 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:02:42,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:02:42,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:02:42,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:02:42,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:02:42,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... [2018-10-23 22:02:42,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:02:42,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:02:42,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:02:42,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:02:42,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:02:42,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:02:42,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:02:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:02:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:02:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:02:42,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:02:42,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:02:42,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:02:45,953 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:02:45,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:02:45 BoogieIcfgContainer [2018-10-23 22:02:45,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:02:45,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:02:45,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:02:45,959 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:02:45,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:02:41" (1/3) ... [2018-10-23 22:02:45,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f527db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:02:45, skipping insertion in model container [2018-10-23 22:02:45,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:02:42" (2/3) ... [2018-10-23 22:02:45,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f527db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:02:45, skipping insertion in model container [2018-10-23 22:02:45,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:02:45" (3/3) ... [2018-10-23 22:02:45,964 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label28_false-unreach-call.c [2018-10-23 22:02:45,974 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:02:45,983 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:02:45,999 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:02:46,036 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:02:46,036 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:02:46,036 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:02:46,037 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:02:46,037 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:02:46,037 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:02:46,037 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:02:46,037 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:02:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-23 22:02:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 22:02:46,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:02:46,074 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:02:46,077 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:02:46,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:02:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1764811988, now seen corresponding path program 1 times [2018-10-23 22:02:46,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:02:46,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:46,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:02:46,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:46,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:02:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:02:46,468 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:02:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:02:46,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:02:46,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:02:46,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:02:46,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:02:46,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:02:46,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:02:46,514 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-23 22:02:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:02:48,443 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-23 22:02:48,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:02:48,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-23 22:02:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:02:48,466 INFO L225 Difference]: With dead ends: 574 [2018-10-23 22:02:48,467 INFO L226 Difference]: Without dead ends: 356 [2018-10-23 22:02:48,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:02:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-23 22:02:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-23 22:02:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-23 22:02:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-23 22:02:48,550 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 18 [2018-10-23 22:02:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:02:48,550 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-23 22:02:48,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:02:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-23 22:02:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 22:02:48,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:02:48,558 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:02:48,558 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:02:48,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:02:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash 498515883, now seen corresponding path program 1 times [2018-10-23 22:02:48,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:02:48,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:48,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:02:48,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:48,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:02:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:02:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:02:48,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:02:48,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:02:48,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:02:48,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:02:48,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:02:48,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:02:48,896 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-23 22:02:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:02:51,646 INFO L93 Difference]: Finished difference Result 1290 states and 2315 transitions. [2018-10-23 22:02:51,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:02:51,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-10-23 22:02:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:02:51,659 INFO L225 Difference]: With dead ends: 1290 [2018-10-23 22:02:51,659 INFO L226 Difference]: Without dead ends: 940 [2018-10-23 22:02:51,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:02:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-10-23 22:02:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 925. [2018-10-23 22:02:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-10-23 22:02:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1443 transitions. [2018-10-23 22:02:51,731 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1443 transitions. Word has length 101 [2018-10-23 22:02:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:02:51,732 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1443 transitions. [2018-10-23 22:02:51,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:02:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1443 transitions. [2018-10-23 22:02:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-23 22:02:51,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:02:51,736 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:02:51,737 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:02:51,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:02:51,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1789374603, now seen corresponding path program 1 times [2018-10-23 22:02:51,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:02:51,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:51,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:02:51,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:51,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:02:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:02:52,095 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:02:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:02:52,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:02:52,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:02:52,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:02:52,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:02:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:02:52,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:02:52,537 INFO L87 Difference]: Start difference. First operand 925 states and 1443 transitions. Second operand 6 states. [2018-10-23 22:02:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:02:56,304 INFO L93 Difference]: Finished difference Result 2535 states and 4089 transitions. [2018-10-23 22:02:56,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:02:56,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-23 22:02:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:02:56,320 INFO L225 Difference]: With dead ends: 2535 [2018-10-23 22:02:56,321 INFO L226 Difference]: Without dead ends: 1616 [2018-10-23 22:02:56,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:02:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-10-23 22:02:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1585. [2018-10-23 22:02:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2018-10-23 22:02:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2320 transitions. [2018-10-23 22:02:56,403 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2320 transitions. Word has length 117 [2018-10-23 22:02:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:02:56,404 INFO L481 AbstractCegarLoop]: Abstraction has 1585 states and 2320 transitions. [2018-10-23 22:02:56,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:02:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2320 transitions. [2018-10-23 22:02:56,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 22:02:56,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:02:56,418 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:02:56,418 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:02:56,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:02:56,418 INFO L82 PathProgramCache]: Analyzing trace with hash 674683355, now seen corresponding path program 1 times [2018-10-23 22:02:56,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:02:56,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:56,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:02:56,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:56,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:02:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:02:56,755 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:02:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:02:56,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:02:56,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:02:56,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:02:56,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:02:56,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:02:56,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:02:56,980 INFO L87 Difference]: Start difference. First operand 1585 states and 2320 transitions. Second operand 6 states. [2018-10-23 22:02:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:02:58,192 INFO L93 Difference]: Finished difference Result 3506 states and 5314 transitions. [2018-10-23 22:02:58,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:02:58,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-23 22:02:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:02:58,208 INFO L225 Difference]: With dead ends: 3506 [2018-10-23 22:02:58,208 INFO L226 Difference]: Without dead ends: 1927 [2018-10-23 22:02:58,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:02:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2018-10-23 22:02:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1888. [2018-10-23 22:02:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2018-10-23 22:02:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2674 transitions. [2018-10-23 22:02:58,279 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2674 transitions. Word has length 141 [2018-10-23 22:02:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:02:58,279 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2674 transitions. [2018-10-23 22:02:58,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:02:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2674 transitions. [2018-10-23 22:02:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-23 22:02:58,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:02:58,285 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:02:58,285 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:02:58,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:02:58,286 INFO L82 PathProgramCache]: Analyzing trace with hash 307682743, now seen corresponding path program 1 times [2018-10-23 22:02:58,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:02:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:58,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:02:58,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:02:58,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:02:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:02:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:02:58,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:02:58,858 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:02:58,859 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-23 22:02:58,861 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:02:58,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:02:58,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:03:01,534 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:03:14,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:03:14,072 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:03:14,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:03:14,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:03:17,074 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 77.16% of their original sizes. [2018-10-23 22:03:17,074 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:03:41,485 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:03:41,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:03:41,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-23 22:03:41,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:03:41,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 22:03:41,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 22:03:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-23 22:03:41,488 INFO L87 Difference]: Start difference. First operand 1888 states and 2674 transitions. Second operand 19 states. [2018-10-23 22:06:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:07,855 INFO L93 Difference]: Finished difference Result 4763 states and 6872 transitions. [2018-10-23 22:06:07,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 22:06:07,855 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2018-10-23 22:06:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:07,868 INFO L225 Difference]: With dead ends: 4763 [2018-10-23 22:06:07,868 INFO L226 Difference]: Without dead ends: 2881 [2018-10-23 22:06:07,877 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 139 SyntacticMatches, 24 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-10-23 22:06:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2018-10-23 22:06:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2670. [2018-10-23 22:06:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2018-10-23 22:06:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3538 transitions. [2018-10-23 22:06:08,025 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3538 transitions. Word has length 181 [2018-10-23 22:06:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:08,026 INFO L481 AbstractCegarLoop]: Abstraction has 2670 states and 3538 transitions. [2018-10-23 22:06:08,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-23 22:06:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3538 transitions. [2018-10-23 22:06:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-23 22:06:08,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:08,032 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:06:08,032 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:08,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1321868351, now seen corresponding path program 1 times [2018-10-23 22:06:08,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:08,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:08,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:06:08,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:06:08,275 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:06:08,276 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-23 22:06:08,276 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:06:08,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:06:08,283 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:06:10,986 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:06:18,843 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:06:18,843 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:06:18,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:18,852 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:06:21,497 INFO L232 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 73.33% of their original sizes. [2018-10-23 22:06:21,498 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 22:06:43,434 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:06:43,439 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:06:43,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:06:43 BoogieIcfgContainer [2018-10-23 22:06:43,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:06:43,441 INFO L168 Benchmark]: Toolchain (without parser) took 242061.68 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 995.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,442 INFO L168 Benchmark]: CDTParser took 0.55 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. [2018-10-23 22:06:43,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.27 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,445 INFO L168 Benchmark]: Boogie Preprocessor took 109.06 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,446 INFO L168 Benchmark]: RCFGBuilder took 3479.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.8 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,447 INFO L168 Benchmark]: TraceAbstraction took 237484.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -994.0 MB). Peak memory consumption was 903.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:06:43,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 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 788.27 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.2 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.06 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3479.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.8 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237484.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -994.0 MB). Peak memory consumption was 903.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 218 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 156.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 548 SDtfs, 4895 SDslu, 610 SDs, 0 SdLazy, 5251 SolverSat, 1140 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 220 GetRequests, 148 SyntacticMatches, 28 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2670occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 25.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9940436978480456 AbsIntWeakeningRatio, 0.13131313131313133 AbsIntAvgWeakeningVarsNumRemoved, 110.66161616161617 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 296 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 691282 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 133/135 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown