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-EXP.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:18:44,304 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:18:44,306 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:18:44,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:18:44,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:18:44,325 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:18:44,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:18:44,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:18:44,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:18:44,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:18:44,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:18:44,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:18:44,337 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:18:44,338 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:18:44,340 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:18:44,340 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:18:44,344 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:18:44,353 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:18:44,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:18:44,358 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:18:44,360 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:18:44,361 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:18:44,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 02:18:44,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 02:18:44,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 02:18:44,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 02:18:44,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 02:18:44,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 02:18:44,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 02:18:44,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 02:18:44,374 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 02:18:44,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 02:18:44,375 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 02:18:44,376 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 02:18:44,377 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 02:18:44,378 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 02:18:44,379 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:18:44,401 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:18:44,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:18:44,403 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:18:44,403 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:18:44,404 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:18:44,404 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:18:44,404 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:18:44,404 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:18:44,404 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:18:44,405 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:18:44,405 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:18:44,405 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:18:44,406 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:18:44,406 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:18:44,406 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:18:44,408 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:18:44,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:18:44,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:18:44,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:18:44,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:18:44,409 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:18:44,409 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:18:44,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:18:44,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:18:44,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:18:44,410 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:18:44,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:18:44,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:18:44,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:18:44,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:18:44,411 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:18:44,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:18:44,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:18:44,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:18:44,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:18:44,412 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:18:44,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:18:44,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:18:44,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:18:44,495 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:18:44,496 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:18:44,496 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/psyco/psyco_security_true-unreach-call_false-termination.c [2018-10-25 02:18:44,561 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67655de52/1b4f02a8599549478ca77b903d85860a/FLAG54cb0ca09 [2018-10-25 02:18:45,024 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:18:45,025 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security_true-unreach-call_false-termination.c [2018-10-25 02:18:45,038 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67655de52/1b4f02a8599549478ca77b903d85860a/FLAG54cb0ca09 [2018-10-25 02:18:45,053 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67655de52/1b4f02a8599549478ca77b903d85860a [2018-10-25 02:18:45,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:18:45,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:18:45,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:18:45,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:18:45,069 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:18:45,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a72ac0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45, skipping insertion in model container [2018-10-25 02:18:45,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:18:45,120 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:18:45,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:18:45,390 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:18:45,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:18:45,459 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:18:45,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45 WrapperNode [2018-10-25 02:18:45,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:18:45,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:18:45,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:18:45,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:18:45,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:18:45,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:18:45,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:18:45,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:18:45,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (1/1) ... [2018-10-25 02:18:45,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:18:45,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:18:45,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:18:45,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:18:45,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (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 [2018-10-25 02:18:45,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:18:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:18:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:18:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:18:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:18:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:18:46,551 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:18:46,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:18:46 BoogieIcfgContainer [2018-10-25 02:18:46,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:18:46,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:18:46,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:18:46,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:18:46,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:18:45" (1/3) ... [2018-10-25 02:18:46,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fba201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:18:46, skipping insertion in model container [2018-10-25 02:18:46,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:18:45" (2/3) ... [2018-10-25 02:18:46,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fba201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:18:46, skipping insertion in model container [2018-10-25 02:18:46,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:18:46" (3/3) ... [2018-10-25 02:18:46,561 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_security_true-unreach-call_false-termination.c [2018-10-25 02:18:46,571 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:18:46,580 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:18:46,597 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:18:46,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:18:46,633 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:18:46,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:18:46,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:18:46,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:18:46,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:18:46,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:18:46,635 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:18:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-10-25 02:18:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-25 02:18:46,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:46,664 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:46,666 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:46,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1921368221, now seen corresponding path program 1 times [2018-10-25 02:18:46,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:46,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:46,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:46,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:46,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:46,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-25 02:18:46,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:46,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-25 02:18:46,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-25 02:18:46,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-25 02:18:46,832 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-10-25 02:18:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:46,866 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2018-10-25 02:18:46,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-25 02:18:46,867 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-25 02:18:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:46,881 INFO L225 Difference]: With dead ends: 160 [2018-10-25 02:18:46,881 INFO L226 Difference]: Without dead ends: 78 [2018-10-25 02:18:46,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-25 02:18:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-25 02:18:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-25 02:18:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-25 02:18:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2018-10-25 02:18:46,935 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2018-10-25 02:18:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:46,936 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2018-10-25 02:18:46,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-25 02:18:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2018-10-25 02:18:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-25 02:18:46,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:46,938 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:46,938 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:46,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -34635363, now seen corresponding path program 1 times [2018-10-25 02:18:46,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:46,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:46,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:46,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:47,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:47,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:47,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:47,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:47,028 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 3 states. [2018-10-25 02:18:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:47,292 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2018-10-25 02:18:47,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:47,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-25 02:18:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:47,295 INFO L225 Difference]: With dead ends: 153 [2018-10-25 02:18:47,295 INFO L226 Difference]: Without dead ends: 81 [2018-10-25 02:18:47,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-25 02:18:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-25 02:18:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-25 02:18:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2018-10-25 02:18:47,314 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2018-10-25 02:18:47,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:47,315 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2018-10-25 02:18:47,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:47,315 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2018-10-25 02:18:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-25 02:18:47,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:47,317 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:47,317 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:47,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:47,318 INFO L82 PathProgramCache]: Analyzing trace with hash -304388480, now seen corresponding path program 1 times [2018-10-25 02:18:47,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:47,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:47,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:47,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:47,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:47,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:47,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:47,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:47,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:47,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:47,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:47,392 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 3 states. [2018-10-25 02:18:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:47,704 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2018-10-25 02:18:47,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:47,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-25 02:18:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:47,706 INFO L225 Difference]: With dead ends: 146 [2018-10-25 02:18:47,707 INFO L226 Difference]: Without dead ends: 72 [2018-10-25 02:18:47,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-25 02:18:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-25 02:18:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-25 02:18:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2018-10-25 02:18:47,723 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2018-10-25 02:18:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:47,724 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2018-10-25 02:18:47,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2018-10-25 02:18:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-25 02:18:47,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:47,727 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:47,728 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:47,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -512664072, now seen corresponding path program 1 times [2018-10-25 02:18:47,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:47,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:47,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:47,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:47,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:47,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:47,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:47,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:47,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:47,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:47,792 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 3 states. [2018-10-25 02:18:48,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:48,081 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2018-10-25 02:18:48,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:48,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-25 02:18:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:48,087 INFO L225 Difference]: With dead ends: 192 [2018-10-25 02:18:48,087 INFO L226 Difference]: Without dead ends: 122 [2018-10-25 02:18:48,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-25 02:18:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2018-10-25 02:18:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-25 02:18:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2018-10-25 02:18:48,100 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2018-10-25 02:18:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:48,101 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2018-10-25 02:18:48,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2018-10-25 02:18:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-25 02:18:48,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:48,102 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:48,103 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:48,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1940953662, now seen corresponding path program 1 times [2018-10-25 02:18:48,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:48,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:48,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:18:48,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:48,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:48,163 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:48,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:48,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:48,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,165 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 3 states. [2018-10-25 02:18:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:48,225 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2018-10-25 02:18:48,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:48,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-10-25 02:18:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:48,227 INFO L225 Difference]: With dead ends: 183 [2018-10-25 02:18:48,227 INFO L226 Difference]: Without dead ends: 87 [2018-10-25 02:18:48,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-25 02:18:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2018-10-25 02:18:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-25 02:18:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2018-10-25 02:18:48,243 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2018-10-25 02:18:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:48,244 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2018-10-25 02:18:48,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2018-10-25 02:18:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-25 02:18:48,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:48,246 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:18:48,246 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:48,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:48,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1172052595, now seen corresponding path program 1 times [2018-10-25 02:18:48,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:48,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:48,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:48,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:48,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,313 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 3 states. [2018-10-25 02:18:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:48,378 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2018-10-25 02:18:48,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:48,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-25 02:18:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:48,380 INFO L225 Difference]: With dead ends: 134 [2018-10-25 02:18:48,380 INFO L226 Difference]: Without dead ends: 70 [2018-10-25 02:18:48,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-25 02:18:48,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-25 02:18:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-25 02:18:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2018-10-25 02:18:48,387 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2018-10-25 02:18:48,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:48,388 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2018-10-25 02:18:48,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2018-10-25 02:18:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-25 02:18:48,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:48,389 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-25 02:18:48,390 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:48,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:48,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1320221367, now seen corresponding path program 1 times [2018-10-25 02:18:48,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:48,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:48,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:48,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:48,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:48,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:48,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,450 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 3 states. [2018-10-25 02:18:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:48,797 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2018-10-25 02:18:48,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:48,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-10-25 02:18:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:48,800 INFO L225 Difference]: With dead ends: 158 [2018-10-25 02:18:48,800 INFO L226 Difference]: Without dead ends: 111 [2018-10-25 02:18:48,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-25 02:18:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2018-10-25 02:18:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-25 02:18:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2018-10-25 02:18:48,810 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2018-10-25 02:18:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:48,811 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2018-10-25 02:18:48,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2018-10-25 02:18:48,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-25 02:18:48,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:48,813 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-25 02:18:48,813 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:48,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:48,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1121323394, now seen corresponding path program 1 times [2018-10-25 02:18:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:48,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:48,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:48,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:48,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:48,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:48,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:48,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:48,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,861 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 3 states. [2018-10-25 02:18:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:48,977 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2018-10-25 02:18:48,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:48,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-25 02:18:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:48,983 INFO L225 Difference]: With dead ends: 166 [2018-10-25 02:18:48,983 INFO L226 Difference]: Without dead ends: 92 [2018-10-25 02:18:48,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-25 02:18:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-25 02:18:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-25 02:18:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2018-10-25 02:18:49,000 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2018-10-25 02:18:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:49,000 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2018-10-25 02:18:49,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2018-10-25 02:18:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-25 02:18:49,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:49,004 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-25 02:18:49,004 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:49,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:49,005 INFO L82 PathProgramCache]: Analyzing trace with hash -984969239, now seen corresponding path program 1 times [2018-10-25 02:18:49,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:49,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:49,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:49,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:49,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:49,061 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:49,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,062 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 3 states. [2018-10-25 02:18:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:49,189 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2018-10-25 02:18:49,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:49,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-25 02:18:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:49,191 INFO L225 Difference]: With dead ends: 139 [2018-10-25 02:18:49,191 INFO L226 Difference]: Without dead ends: 72 [2018-10-25 02:18:49,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-25 02:18:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-25 02:18:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-25 02:18:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2018-10-25 02:18:49,198 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2018-10-25 02:18:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:49,198 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2018-10-25 02:18:49,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2018-10-25 02:18:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-25 02:18:49,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:49,200 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-25 02:18:49,200 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:49,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:49,200 INFO L82 PathProgramCache]: Analyzing trace with hash 885900628, now seen corresponding path program 1 times [2018-10-25 02:18:49,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:49,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:49,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:49,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:49,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:49,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:49,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:49,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:49,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,284 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 3 states. [2018-10-25 02:18:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:49,396 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2018-10-25 02:18:49,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:49,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-25 02:18:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:49,398 INFO L225 Difference]: With dead ends: 74 [2018-10-25 02:18:49,399 INFO L226 Difference]: Without dead ends: 70 [2018-10-25 02:18:49,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-25 02:18:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-25 02:18:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-25 02:18:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-10-25 02:18:49,405 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2018-10-25 02:18:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:49,405 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-10-25 02:18:49,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-10-25 02:18:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-25 02:18:49,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:18:49,407 INFO L375 BasicCegarLoop]: trace histogram [3, 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] [2018-10-25 02:18:49,407 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:18:49,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:18:49,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1704565915, now seen corresponding path program 1 times [2018-10-25 02:18:49,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:18:49,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:18:49,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:18:49,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:18:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:18:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:18:49,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:18:49,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:18:49,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:18:49,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:18:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:18:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,462 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2018-10-25 02:18:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:18:49,548 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2018-10-25 02:18:49,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:18:49,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-25 02:18:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:18:49,549 INFO L225 Difference]: With dead ends: 111 [2018-10-25 02:18:49,549 INFO L226 Difference]: Without dead ends: 0 [2018-10-25 02:18:49,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:18:49,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-25 02:18:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-25 02:18:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-25 02:18:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-25 02:18:49,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-10-25 02:18:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:18:49,558 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-25 02:18:49,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:18:49,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-25 02:18:49,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-25 02:18:49,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-25 02:18:49,786 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-25 02:18:49,813 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-25 02:18:49,814 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point L316(lines 316 331) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point L283(lines 283 382) no Hoare annotation was computed. [2018-10-25 02:18:49,814 INFO L425 ceAbstractionStarter]: For program point L250(lines 250 261) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L184(lines 184 199) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L118(lines 118 129) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L366(lines 366 377) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L300(lines 300 315) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L234(lines 234 245) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L102(lines 102 113) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L350(lines 350 361) no Hoare annotation was computed. [2018-10-25 02:18:49,815 INFO L425 ceAbstractionStarter]: For program point L284(lines 284 299) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L218(lines 218 229) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L86(lines 86 88) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L334(lines 334 345) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L202(lines 202 213) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L70(lines 70 72) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L318(lines 318 329) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L186(lines 186 197) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L54(lines 54 56) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point L302(lines 302 313) no Hoare annotation was computed. [2018-10-25 02:18:49,816 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L170(lines 170 172) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L286(lines 286 297) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L154(lines 154 156) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 385) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 0)) (and (= main_~this_state~0 3) (<= 4 main_~q~0))) [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 385) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L270(lines 270 272) no Hoare annotation was computed. [2018-10-25 02:18:49,817 INFO L425 ceAbstractionStarter]: For program point L138(lines 138 140) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L254(lines 254 256) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L122(lines 122 124) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L370(lines 370 372) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L238(lines 238 240) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L106(lines 106 108) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L354(lines 354 356) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L425 ceAbstractionStarter]: For program point L222(lines 222 224) no Hoare annotation was computed. [2018-10-25 02:18:49,818 INFO L421 ceAbstractionStarter]: At program point L371(lines 13 390) the Hoare annotation is: false [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L338(lines 338 340) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L206(lines 206 208) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L322(lines 322 324) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L190(lines 190 192) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L306(lines 306 308) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L290(lines 290 292) no Hoare annotation was computed. [2018-10-25 02:18:49,819 INFO L425 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 43) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L80(lines 80 95) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L47(lines 47 98) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L64(lines 64 79) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L48(lines 48 63) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L164(lines 164 179) no Hoare annotation was computed. [2018-10-25 02:18:49,820 INFO L425 ceAbstractionStarter]: For program point L148(lines 148 163) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L82(lines 82 93) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L264(lines 264 279) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L132(lines 132 147) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L99(lines 99 182) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 77) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L248(lines 248 263) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L116(lines 116 131) no Hoare annotation was computed. [2018-10-25 02:18:49,821 INFO L425 ceAbstractionStarter]: For program point L50(lines 50 61) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L425 ceAbstractionStarter]: For program point L364(lines 364 379) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L425 ceAbstractionStarter]: For program point L232(lines 232 247) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L425 ceAbstractionStarter]: For program point L166(lines 166 177) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L425 ceAbstractionStarter]: For program point L100(lines 100 115) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L425 ceAbstractionStarter]: For program point L34(lines 34 36) no Hoare annotation was computed. [2018-10-25 02:18:49,822 INFO L421 ceAbstractionStarter]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= main_~this_state~0 2)) (and .cse0 (= main_~q~0 0)) (and (= main_~this_state~0 3) (<= 4 main_~q~0)))) [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L348(lines 348 363) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L216(lines 216 231) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L183(lines 183 282) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L150(lines 150 161) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L332(lines 332 347) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L266(lines 266 277) no Hoare annotation was computed. [2018-10-25 02:18:49,823 INFO L425 ceAbstractionStarter]: For program point L200(lines 200 215) no Hoare annotation was computed. [2018-10-25 02:18:49,824 INFO L425 ceAbstractionStarter]: For program point L134(lines 134 145) no Hoare annotation was computed. [2018-10-25 02:18:49,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:18:49 BoogieIcfgContainer [2018-10-25 02:18:49,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:18:49,840 INFO L168 Benchmark]: Toolchain (without parser) took 4776.31 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 691.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -556.6 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:18:49,841 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:18:49,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.84 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-25 02:18:49,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:18:49,843 INFO L168 Benchmark]: Boogie Preprocessor took 38.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:18:49,844 INFO L168 Benchmark]: RCFGBuilder took 1021.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 691.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -719.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:18:49,845 INFO L168 Benchmark]: TraceAbstraction took 3285.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 152.0 MB). Peak memory consumption was 152.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:18:49,849 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.84 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 32.02 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1021.50 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 691.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -719.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3285.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 152.0 MB). Peak memory consumption was 152.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 2) || (q == 3 && this_state == 2)) || (this_state <= 0 && q == 0)) || (this_state == 3 && 4 <= q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (this_state <= 0 && q == 0) || (this_state == 3 && 4 <= q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 1008 SDtfs, 337 SDslu, 455 SDs, 0 SdLazy, 217 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 49 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 10566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...